18-letter words containing r, o, t, s, c

spherical geometry — the branch of geometry that deals with figures on spherical surfaces.
split-level cooker — a cooker that is designed with a separate oven and hob so that they can be fitted wherever is most convenient in the kitchen
spotted flycatcher — a European woodland songbird, Muscicapa striata, with a greyish-brown streaked plumage: family Muscicapidae (Old World flycatchers)
st john chrysostom — Saint John, a.d. 347?–407, ecumenical patriarch of Constantinople.
st. andrew's cross — a low evergreen shrub, Ascyrum hypericoides, native to temperate and subtropical America, having flowers in clusters of three: often cultivated.
state of emergency — If a government or other authority declares a state of emergency in an area, it introduces special measures such as increased powers for the police or army, usually because of civil disorder or because of a natural disaster such as an earthquake.
stationary bicycle — an exercise bike
statutory sick pay — the pay an employee is legally entitled to when sick
steering committee — a committee, especially of a deliberative or legislative body, charged with preparing the agenda of a session.
stockholm syndrome — an emotional attachment to a captor formed by a hostage as a result of continuous stress, dependence, and a need to cooperate for survival.
stoichiometrically — of or relating to stoichiometry.
stokely carmichael — Hoagland Howard [hohg-luh nd] /ˈhoʊg lənd/ (Show IPA), ("Hoagy") 1899–1981, U.S. songwriter and musician.
stomach sweetbread — sweetbread (def 1).
store launch event — A store launch event is a special event, which publicizes the opening of a new store and at which discounts and free samples may be offered.
strathclyde region — a former local government region in W Scotland: formed in 1975 from Glasgow, Renfrewshire, Lanarkshire, Buteshire, Dunbartonshire, and parts of Argyllshire, Ayrshire, and Stirlingshire; replaced in 1996 by the council areas of Glasgow, Renfrewshire, East Renfrewshire, Inverclyde, North Lanarkshire, South Lanarkshire, Argyll and Bute, East Dunbartonshire, West Dunbartonshire, North Ayrshire, South Ayrshire, and East Ayrshire
stretch one's legs — either of the two lower limbs of a biped, as a human being, or any of the paired limbs of an animal, arthropod, etc., that support and move the body.
strong interaction — the interaction between gluons and between gluons and quarks that is responsible for the strong force.
structural formula — a chemical formula showing the linkage of the atoms in a molecule diagrammatically, as H–O–H.
structural geology — the branch of geology dealing with the structure and distribution of the rocks that make up the crust of the earth. Also called tectonics. Compare structure (def 7a).
student councillor — a student who is a member of a council or body representing the interests of students at a school, university or college
subatomic particle — physics:
subordinate clause — a clause that modifies the principal clause or some part of it or that serves a noun function in the principal clause, as when she arrived in the sentence I was there when she arrived or that she has arrived in the sentence I doubt that she has arrived.
super royal octavo — a book size, 63⁄4 by 101⁄4 inches
supporting actress — an actress playing a supporting role
surface-to-surface — (of a missile, message, etc.) capable of traveling from a base on the surface of the earth to a target also on the surface.
symmetric function — a polynomial in several indeterminates that stays the same under any permutation of the indeterminates.
symphony orchestra — a large orchestra composed of wind, string, and percussion instruments and organized to perform symphonic compositions.
synthetic geometry — elementary geometry, as distinct from analytic geometry.
take out insurance — take out insurance against something
task control block — (architecture) An MVS control block used to communicate information about tasks within an address space that are connected to an MVS subsystem such as MQSeries for MVS/ESA or CICS.
terms of reference — Terms of reference are the instructions given to someone when they are asked to consider or investigate a particular subject, telling them what they must deal with and what they can ignore.
the coast is clear — If you say that the coast is clear, you mean that there is nobody around to see you or catch you.
the uncircumcision — the gentiles
thermoluminescence — phosphorescence produced by the heating of a substance.
thioarsenious acid — any of a group of hypothetical acids, H3AsS3, HAsS2, and H4As2S5, known only in the forms of their salts
thiosulphuric acid — an unstable acid known only in solutions and in the form of its salts. Formula: H2S2O3
thirty-second note — a note having 1/32 of the time value of a whole note; demi-semiquaver.
thirty-second rest — a rest equal in value to a thirty-second note.
to all appearances — apparently
to be caught short — If you are caught short or are taken short, you feel a sudden strong need to urinate, especially when you cannot easily find a toilet.
to be on the rocks — if something such as a marriage or a business is on the rocks, it is experiencing very severe difficulties and looks likely to end very soon
to cast aspersions — If you cast aspersions on someone or something, you suggest that they are not very good in some way.
to clear the decks — If you clear the decks, you get ready to start something new by finishing any work that has to be done or getting rid of any problems that are in the way.
to close your mind — If you close your mind to something, you deliberately do not think about it or pay attention to it.
to cool your heels — If you are cooling your heels, someone is deliberately keeping you waiting, so that you get bored or impatient.
to cross your mind — If you say that an idea or possibility never crossed your mind, you mean that you did not think of it.
to cut the mustard — If someone does not cut the mustard, their work or their performance is not as good as it should be or as good as it is expected to be.
to scrape a living — If you say that someone scrapes a living or scratches a living, you mean that they manage to earn enough to live on, but it is very difficult. In American English, you say they scrape out a living or scratch out a living.
to watch your step — If someone tells you to watch your step, they are warning you to be careful about how you behave or what you say so that you do not get into trouble.
transcendental ego — (in Kantian epistemology) that part of the self that is the subject and never the object.

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